PIPER—FLORA OF THE STATE OF WASHINGTON. 295 
13. Arabis suffrutescens S. Wats. Proc. Am. Acad. 17: 362. 1882. 
Type Locatity: “Bluffs of the Snake River and vicinity, Union County, Oregon.” 
Collected by Cusick. 
Rance: Washington and Oregon. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 98, 511. 
14. Arabis latifolia (5S. Wats.). 
Arabis canescens latifolia S. Wats. Bot. King Explor. 17. 1871. 
Arabis lemmoni 8. Wats. Proc. Am. Acad. 22: 467. 1887. 
Type Locatrry: Clover Mountains, Nevada. Collected by Watson. 
Rance: Washington to Montana and California. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 509, 510, 1920; Henderson 2391. 
15. Arabis drummondii A. Gray, Proc. Am. Acad. 6: 187. 1863-69. 
Turritis stricta Graham, Edinb. New Phil. Journ. 1829: 350. 1829, not Arabis stricta, 
Host. 1827. 
Streptanthus angustifolius Nutt.; Torr. & Gr. Fl. 1:76, 1838, not Arabis angustifolius Lam. 
1783. 
Type tocatiry: Rocky Mountains. Collected by Drummond. 
Rance: California and Colorado, northward into British America. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 2181; Clallam County, Elmer 2693 
in part; Mount Rainier, Piper 2065; north of Mount Adams, Henderson 2397; Mount 
Baker, Flett 859; Horseshoe Basin, Lake & Hull, August 24, 1892; Stevens Pass, Sand- 
berg & Leiberg 764. 
ZONAL DISTRIBUTION: I{udsonian, 
16. Arabis lyallii S. Wats. Proc. Am. Acad. 11: 122. 1876. 
Arabis drummondii alpina 8. Wats. Bot. King Explor. 18. 1871, not A, alpina L. 
Type tocauity: “In the mountains from Washington Territory to Mono Pass in the 
Sierra Nevada and eastward to W. Wyoming and Utah.” 
Rance: British Columbia to California and Utah. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 2180; Plett 94; Mount Rainier, Piper 
2066, 2064; Smith 801; Allen 299; Clallam County, Elmer 2693 in part; Mount Adams, 
Henderson 2390; Suksdorf 508, 96; Howell 557; Ashnola River, Cascade Mountains, Lyall ; 
Blue Mountains, Horner 282. 
ZONAL DISTRIBUTION: Arctic. 
17. Arabis microphylla Nutt.: Torr. & Gr. FI. 1: 82. 1838. 
Type Locauity: “Rocky Mountains.” Collected by Nuttall. 
Rance: Washington to Wyoming and Nevada. 
SPECIMENS EXAMINED: White Salmon, Suksdorf 2. 
18. Arabis cusickii S. Wats. Proc. Am. Acad. 17: 363. 1882. 
Type tocauity: “On rocky ridges, Union County, Oregon.” Collected by Cusick. 
Rance: Washington and Oregon. 
SPECIMENS EXAMINED: Ellensburg, Piper 2711; Cleman Mountain, Henderson 2388 in 
part; Johnson Canyon, Brandegee 624; Rock Creek, Sandberg & Leiberg 92; between 
Coulee City and Waterville, Spillman, May, 1896; Coulee City, Piper 3841; Spokane 
County, Suksdorf 1921; Pine City, Piper 2828, 2829, the latter ambiguous toward A. spars’ 
flora. 
ZONAL DISTRIBUTION: Arid Transition. 
ARABIS BREWERI S. Wats. Proc. Am. Acad. 11: 123.1876. This species appears in Suks~ 
dorf’s list, but we have seen no Washington specimens. 
